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Development of Gas-Responsive Porous Magnets via Host-Guest Charge Transfer

Research Project

Project/Area Number 20K15294
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 34010:Inorganic/coordination chemistry-related
Research InstitutionTohoku University

Principal Investigator

Zhang Jun  東北大学, 学際科学フロンティア研究所, 助教 (70870103)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
KeywordsPorous magnet / Host-guest chemistry / Electron transfer / Charge transfer / Magnetic property / Electrical property / Electrical conductivity / Porous Magnet / Gas Sorption / Magnetic Property
Outline of Research at the Start

The reversible magnetic change of porous magnets has so far been observed via 1) structural modification, 2) spin meditation of oxygen, and 3) electronic state modulation. Here, I proposed a new concept -Host-Guest Charge Transfer (HGCT)- to achieve a reversible magnetic phase switch.

Outline of Final Research Achievements

We demonstrated a guest-responsive porous magnet that is a paramagnet on I2 adsorption (with its magnetism ‘switched off’) and converts into a antiferromagnt on I2 desorption (with its magnetism now ‘switched on’) via host-guest electron transfer.

Academic Significance and Societal Importance of the Research Achievements

「多孔質磁石」は、従来からよく知られた電場・磁場・光・圧力などの物理的な刺激とは異なり、「分子吸脱着」という化学的な刺激により駆動する材料です。本研究における、吸着分子とホスト骨格の間での直接的な電子授受により駆動する可逆磁気相変換は世界初観測であり、新たな駆動原理により「化学物質による物性制御」を実現したという点で、高機能分子デバイスの実現へ向けて、基礎・応用の両面から大変意義深い結果だと考えられます。このような材料は、化学的刺激により駆動する分子デバイスの新たな駆動原理の一つとして今後の発展が期待できます。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020 Other

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (4 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Remarks (3 results)

  • [Journal Article] A Host-Guest Electron Transfer Mechanism for Magnetic and Electronic Modifications in a Redox-Active Metal-Organic Framework2022

    • Author(s)
      Zhang Jun, Kosaka Wataru, Kitagawa Yasutaka, Miyasaka Hitoshi
    • Journal Title

      Angewandte Chemie International Edition

      Volume: xxx

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A metal-organic framework that exhibits CO2-induced transitions between paramagnetism and ferrimagnetism2021

    • Author(s)
      Zhang Jun、Kosaka Wataru、Kitagawa Yasutaka、Miyasaka Hitoshi
    • Journal Title

      Nature Chemistry

      Volume: 13 Issue: 2 Pages: 191-199

    • DOI

      10.1038/s41557-020-00577-y

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnet creation by guest insertion into a paramagnetic charge-flexible layered metal-organic framework2021

    • Author(s)
      Jun Zhang, Wataru Kosaka, Hiroyasu Sato, Hitoshi Miyasaka
    • Journal Title

      Journal of the American Chemical Society

      Volume: 143 Issue: 18 Pages: 7021-7031

    • DOI

      10.1021/jacs.1c01537

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Temperature- and Guest-Driven Electronic State Modulation in Molecular Magnets2021

    • Author(s)
      Jun Zhang, Wataru Kosaka, Hiroyasu Sato, Hitoshi Miyasaka
    • Organizer
      The 1st Asian Conference on Molecular Magnetism
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] CO2-Induced Magnetic Phase Transitions between Paramagnet and Ferrimagnet in a Porous Magnet2021

    • Author(s)
      Jun Zhang, Wataru Kosaka, Hitoshi Miyasaka
    • Organizer
      The 5th Symposium for The Core Research Clusters for Materials Science and Spintronics, and the 4th Symposium on International Joint Graduate Program in Materials Science
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Temperature- and Guest-Driven Electronic State Modulation in Molecular Magnets2021

    • Author(s)
      Jun Zhang, Wataru Kosaka, Hiroyasu Sato, Hitoshi Miyasaka.
    • Organizer
      The 1st Asian Conference on Molecular Magnetism
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electronic State Modulation of Magnetic Sponge upon Solvents and Gases2020

    • Author(s)
      Jun Zhang
    • Organizer
      日本化学会第100春季年会;Asian International Symposium - Inorganic Chemistry / Coordination Chemistry and Organometallic Chemistry
    • Related Report
      2020 Research-status Report
    • Invited
  • [Remarks] ホスト-ゲスト間電子移動の制御による磁石スイッチ 新たな電子状態変換機構に基づく磁気相変換に成功

    • URL

      https://www.tohoku.ac.jp/japanese/2022/03/press20220315-04-Transfar.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] 分子の吸着で磁石を創る 吸着分子に依存した磁気相変換の実現

    • URL

      https://www.tohoku.ac.jp/japanese/2021/04/post-62.html

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
  • [Remarks] 二酸化炭素の吸脱着による磁石のON-OFF制御に成功ー”二酸化炭素磁気センサー”への道筋

    • URL

      http://www.tohoku.ac.jp/japanese/2020/12/press20201201-01-mof.html

    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2023-01-30  

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